diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/dccp/ccids/ccid2.c | 21 | ||||
| -rw-r--r-- | net/dccp/ccids/ccid2.h | 5 |
2 files changed, 18 insertions, 8 deletions
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c index bbf16b3..c7d83e3 100644 --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -123,12 +123,9 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx) static int ccid2_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb) { - struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk); - - if (hctx->pipe < hctx->cwnd) - return 0; - - return 1; /* XXX CCID should dequeue when ready instead of polling */ + if (ccid2_cwnd_network_limited(ccid2_hc_tx_sk(sk))) + return CCID_PACKET_WILL_DEQUEUE_LATER; + return CCID_PACKET_SEND_AT_ONCE; } static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val) @@ -168,6 +165,7 @@ static void ccid2_hc_tx_rto_expire(unsigned long data) { struct sock *sk = (struct sock *)data; struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk); + const bool sender_was_blocked = ccid2_cwnd_network_limited(hctx); long s; bh_lock_sock(sk); @@ -187,8 +185,6 @@ static void ccid2_hc_tx_rto_expire(unsigned long data) if (s > 60) hctx->rto = 60 * HZ; - ccid2_start_rto_timer(sk); - /* adjust pipe, cwnd etc */ hctx->ssthresh = hctx->cwnd / 2; if (hctx->ssthresh < 2) @@ -205,6 +201,11 @@ static void ccid2_hc_tx_rto_expire(unsigned long data) hctx->rpdupack = -1; ccid2_change_l_ack_ratio(sk, 1); ccid2_hc_tx_check_sanity(hctx); + + /* if we were blocked before, we may now send cwnd=1 packet */ + if (sender_was_blocked) + tasklet_schedule(&dccp_sk(sk)->dccps_xmitlet); + ccid2_start_rto_timer(sk); out: bh_unlock_sock(sk); sock_put(sk); @@ -455,6 +456,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk); + const bool sender_was_blocked = ccid2_cwnd_network_limited(hctx); struct dccp_ackvec_parsed *avp; u64 ackno, seqno; struct ccid2_seq *seqp; @@ -640,6 +642,9 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) ccid2_hc_tx_check_sanity(hctx); done: + /* check if incoming Acks allow pending packets to be sent */ + if (sender_was_blocked && !ccid2_cwnd_network_limited(hctx)) + tasklet_schedule(&dccp_sk(sk)->dccps_xmitlet); dccp_ackvec_parsed_cleanup(&hctx->av_chunks); } diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h index 907deed..d5900dd 100644 --- a/net/dccp/ccids/ccid2.h +++ b/net/dccp/ccids/ccid2.h @@ -70,6 +70,11 @@ struct ccid2_hc_tx_sock { struct list_head av_chunks; }; +static inline bool ccid2_cwnd_network_limited(struct ccid2_hc_tx_sock *hctx) +{ + return (hctx->pipe >= hctx->cwnd); +} + struct ccid2_hc_rx_sock { int data; }; |
